My Phantom BA XR6 Turbo Build

[Puffwagon]

  On 18/02/2019 at 1:05 PM, eff xr6t said:

My stock 4l did 7200+ for years on 25lb 

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That wasn't a barra though was it? That's not something a stock barra can do.

[eff xr6t]

Still has the same bore and stroke as a Barra not a lot changed on them. If anything the early motor had a worse rod to stroke ratio because of 4mm shorter rods.

Plenty of speedway guys been turning a 250 to 7500 for years aswell the same stroke. It might be more then what’s recommended safe but lot of motors out there doing it

[Puffwagon]

Yeah I guess the trade off is lifespan. That's always the downside to revving any motor past it's safe limits.

[S.M.K]

What happened to this build? I remember reading it last year getting excited 😕😕